CVE-2026-27723 OpenProject: Insufficient access control leads to create Wiki objects belongs unpermitted projects

What is CVE-2026-27723?

CVE-2026-27723 is a medium-severity missing authorization vulnerability in opf openproject, published on 5 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

OpenProject is an open-source, web-based project management software. Prior to versions 17.0.5 and 17.1.2, an attacker can create wiki pages belonging to unpermitted projects through an improperly authenticated request. This issue has been patched in versions 17.0.5 and 17.1.2.

Weakness: CWE-284

Which versions are affected by CVE-2026-27723?

It affects 1 product.

Products include Openproject Openproject.

How do I fix CVE-2026-27723?

No fix has been published for CVE-2026-27723 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-27723 being exploited?

There is no known exploitation of CVE-2026-27723 in the wild and no public exploit code.

Other vulnerabilities in opf openproject

• CVE-2026-34717 OpenProject: SQL Injection in Cost Reporting =n Operator via parse_number_string Critical 9.9
• CVE-2026-25763 Command Injection on OpenProject repositories leads to Remote Code Execution Critical 9.4
• CVE-2026-24685 OpenProject has Argument Injection on Repository module that allows Arbitrary File Write Critical 9.4
• CVE-2026-32698 OpenProject has a SQL Injection via Custom Field Name that can be chained to Remote Code Execution Critical 9.1
• CVE-2026-32703 OpenProject's repository files are served with the MIME type allowing them to be used to bypass Content Security Policy Critical 9.1

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-9gc6-3xjq-pwc9.